CN210188357U

CN210188357U - Extrusion forming die for track traffic sleeve type forge pieces

Info

Publication number: CN210188357U
Application number: CN201822175481.6U
Authority: CN
Inventors: Wanqing Zhang; 张万清; Yujing Cheng; 程玉净; Qiaomei Huang; 黄俏梅; Yingchun Niu; 牛迎春
Original assignee: Zhuzhou Zhongche Tianli Forging Industry Co Ltd
Current assignee: Zhuzhou Zhongche Tianli Forging Industry Co Ltd
Priority date: 2018-12-24
Filing date: 2018-12-24
Publication date: 2020-03-27
Anticipated expiration: 2028-12-24

Abstract

The utility model discloses a track traffic cover class forging extrusion forming die, including upper die base, die holder, extrusion die terrace die, extrusion die, the installation of extrusion die is fixed on the upper bottom surface of die holder, the installation of extrusion die terrace die is fixed on the lower bottom surface of upper die base, and the extrusion die terrace die uses with the cooperation of extrusion die; the upper die holder and the lower die holder are connected through a lifting mechanism, and the upper die holder and the lower die holder are arranged in parallel. The utility model discloses can reduce the work load, do benefit to and shorten processing cycle, improve production efficiency, reduction in production cost.

Description

Extrusion forming die for track traffic sleeve type forge pieces

Technical Field

The utility model relates to a forming die, concretely relates to track traffic cover class forging extrusion moulding mould.

Background

Along with the overall improvement requirement of the quality and the efficiency of the rail transit equipment industry, the production efficiency and the processing technology requirement of the product are also improved. For small and medium-sized long hole sleeve type parts with the mass of 20-90kg, the height of more than 120mm and the height-to-product inner diameter ratio of more than 1, the small and medium-sized long hole sleeve type parts are limited by the height of a ring rolling mill, the process routes of free forging, punching, reaming and machining are adopted, the defects of more raw materials consumed by products, high labor intensity, low production efficiency, poor product size consistency, certain rejection rate, large product machining amount, long machining period and the like exist, and the existing forging die is not suitable for the rail transit sleeve type forging parts due to the influences of the product height, the inner hole depth-to-inner diameter ratio and the like, so that the extrusion forming die special for the rail transit type forging parts needs to be provided.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to overcome prior art not enough, provide a track traffic cover class forging extrusion forming die, it can reduce the work load, does benefit to and shortens processing cycle, improves production efficiency, reduction in production cost.

In order to solve the technical problem, the utility model provides a technical scheme does: an extrusion forming die for a track traffic sleeve type forge piece comprises an upper die base, a lower die base, an extrusion die male die and an extrusion die female die, wherein the extrusion die female die is fixedly arranged on the upper bottom surface of the lower die base, the extrusion die male die is fixedly arranged on the lower bottom surface of the upper die base, and the extrusion die male die and the extrusion die female die are matched for use; the upper die holder and the lower die holder are connected through a lifting mechanism, and the upper die holder and the lower die holder are arranged in parallel; and the lower die base is provided with a punching connecting leather positioning hole.

As a further improvement of the above technical solution: the extrusion die male die is arranged on the lower bottom surface of the upper die base through an upper die sleeve; and the extrusion die female die is arranged on the upper bottom surface of the lower die base through a lower die sleeve.

Furthermore, the number of the lifting mechanisms is two, and the two lifting mechanisms are respectively arranged on two sides of an extrusion forming mechanism formed by the extrusion die male die and the extrusion die female die.

Furthermore, the lifting mechanism comprises a guide pillar and a guide sleeve, and the guide pillar can extend up and down in the guide sleeve.

Furthermore, an extrusion hole on the female die of the extrusion die is communicated with the lower die seat.

Further, the diameter, the inclination angle and the height of an extrusion head of the male die of the extrusion die can be modified according to the specification of a sleeve part to be formed, the diameter of the extrusion head is increased along with the increase of the diameter of a cavity of the female die of the extrusion die, the height of the extrusion head is increased along with the increase of the depth of the cavity of the female die of the extrusion die, and the inclination angle is properly adjusted to be increased along with the increase of the depth of the cavity of the female die of the; the diameter and the height of the cavity of the extrusion die concave die can be increased or decreased according to the increase or decrease of the specification of the sleeve type piece to be formed.

Furthermore, after the sleeve type forging is extruded and formed, a punch can be directly placed in the position of the connecting skin punching positioning hole, the connecting skin left in the extruding hole punching process is punched by using equipment pressure, and the sleeve type forging is formed in a one-step forging mode.

Further, the maximum stroke of the lifting mechanism is not less than 800 mm.

Furthermore, the suitable sleeve type forging piece has the mass of 20-90kg, the height of not less than 120mm and a small and medium-sized long hole with the height-to-product inner diameter ratio of more than 1.

Furthermore, the inclination angle of the extrusion head of the extrusion die male die is 5-7 degrees, and the inclination angle of the extrusion head of the extrusion die male die is increased according to the increase of the cavity of the extrusion die female die or the increase of the height of the sleeve type forge piece.

Compared with the prior art, the utility model has the advantages of:

1. the utility model can reduce the processing amount by reducing the process discharge amount, and shorten the processing period;

2. the utility model discloses a directly put the cover class forging of extrusion on the lower bolster towards even skin locating hole department, utilize equipment pressure, put into cover class spare hole with the drift, dash the even skin that goes the extrusion hole process and leave, one shot forming, very simple, convenient.

3. The utility model discloses utilize equipment precision and mould cavity to ensure product overall dimension precision, reach and improve product size uniformity, improve product appearance quality, improve the purpose of product percent of pass. The original on-hammer free forging process is improved into the on-hammer die forging process of the existing friction press, the defect that the wall thickness error of the sleeve part is large due to the fact that the center of manual punching cannot be accurate in the original on-hammer blank manufacturing process is overcome, the height limit (120mm) of a ring rolling machine ring rolling is broken, the wall thickness error of the sleeve part is guaranteed, the thickness uniformity of a product is greatly improved, the quality of a die forging piece is further guaranteed, and meanwhile the qualified rate is improved;

4. the utility model discloses a modify the relevant size of extrusion die concave, terrace die, accomplish the backward extrusion of different middle-size and small-size slot hole cover class spare products and take shape to realize the diversified use of mould, the cover class forging that the applicant of this application has carried out the volume production has products such as two kinds of lifting pin covers, rescue lifting cover, and the average annual output of each kind of product is 3000;

5. the utility model discloses can provide special extrusion forming die for improving forging process, do benefit to and forge original freedom into the mould and forge, do benefit to and improve production efficiency.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is a schematic structural view of the lower die holder of the present invention.

Illustration of the drawings:

1. an upper die holder; 2. a lower die holder; 3. extruding a male die of the die; 4. extruding a female die; 5. a lifting mechanism; 51. a guide post; 52. a guide sleeve; 6. putting a die sleeve; 7. a lower die sleeve; 8. punching a connecting skin positioning hole.

Detailed Description

To facilitate understanding of the present invention, the present invention will be described more fully and specifically with reference to the accompanying drawings and preferred embodiments, but the scope of the present invention is not limited to the specific embodiments described below.

As shown in fig. 1 and 2, the extrusion forming die for the track traffic sleeve type forge piece comprises an upper die holder 1, a lower die holder 2, an extrusion die male die 3 and an extrusion die female die 4, wherein the extrusion die female die 4 is fixedly installed on the upper bottom surface of the lower die holder 2, the extrusion die male die 3 is fixedly installed on the lower bottom surface of the upper die holder 1, and the extrusion die male die 3 is matched with the extrusion die female die 4 for use; the upper die holder 1 and the lower die holder 2 are connected through a lifting mechanism 5, and the upper die holder 1 and the lower die holder 2 are arranged in parallel; the lower die base 2 is provided with a punching and connecting leather positioning hole 8.

In the embodiment, the extruding die convex die 3 is arranged on the lower bottom surface of the upper die holder 1 through the upper die sleeve 6; the extrusion die concave die 4 is arranged on the upper bottom surface of the lower die base 2 through a lower die sleeve 7.

In this embodiment, the number of the lifting mechanisms 5 is two, and the two lifting mechanisms are respectively arranged on two sides of the extrusion forming mechanism formed by the extrusion die male die 3 and the extrusion die female die 4.

In this embodiment, the lifting mechanism 5 includes a guide post 51 and a guide sleeve 52, and the guide post 51 can extend and retract up and down in the guide sleeve 52.

In this embodiment, the extrusion holes of the female die 4 of the extrusion die are communicated with the lower die holder 2.

In the embodiment, the diameter, the inclination angle and the height of the extrusion head of the male die 3 of the extrusion die can be modified according to the specification of a sleeve part to be formed, the diameter of the extrusion head is increased along with the increase of the diameter of the cavity of the female die 4 of the extrusion die, the height of the extrusion head is increased along with the increase of the depth of the cavity of the female die 4 of the extrusion die, and the inclination angle is properly increased along with the increase of the depth of the cavity of the female die 4 of the; the cavity diameter and the height of the extrusion die cavity 4 can be increased or decreased according to the increase or decrease of the specification of the sleeve type piece to be formed.

In this embodiment, after the sleeve type forging is extruded and formed, the punch can be directly placed in the sleeve type forging at the position of the continuous skin punching positioning hole 8, the continuous skin left in the extrusion hole punching process is punched by using the pressure of equipment, and the sleeve type forging is formed by one-step forging.

In this embodiment, the maximum stroke of the lifting mechanism 5 is not less than 800 mm.

In the embodiment, the suitable sleeve type forging piece has the mass of 20-90kg, the height of not less than 120mm and a small and medium-sized long hole with the height-to-product inner diameter ratio of more than 1.

In this embodiment, the inclination angle of the extrusion head of the male die 3 of the extrusion die is 5 °, and the inclination angle of the extrusion head of the male die 3 of the extrusion die is increased according to the increase of the cavity of the female die 4 of the extrusion die or the increase of the height of the sleeve forging.

The using process of the embodiment is as follows: firstly, designing/modifying the sizes of a male die 3 and a female die 4 of an extrusion die according to the specific size of a sleeve product; assembling the designed male die 3 and female die 4 of the extrusion die on a friction press; preheating the assembled mould at the temperature of 300-400 ℃ for 0.5-1.5 hours; after preheating to the temperature, putting the heated sleeve parts into an extrusion die female die 4; operating a press machine, extruding the male die 3 of the extrusion die into the die cavity of the female die 4 of the extrusion die, and extruding and forming a product (an inner hole is provided with a connecting skin); operating the press machine, and withdrawing the extrusion die convex die 3 from the die cavity of the extrusion die convex die 3; operating the press machine, ejecting the sleeve type forge piece with the inner hole and the connecting skin out of the die cavity by using an ejector rod, and placing the sleeve type forge piece into a connecting skin punching positioning hole 8 beside the die; taking the product out of the impression and placing the product at a specified position beside the mould; putting a punch into the inner hole of the formed sleeve part, operating a press machine, and punching to clean the connected skin; the product is horizontally moved and pushed down from the die, and the punch falls out in the falling process of the product; picking up the punch, putting the product into a charging basket, and stacking for cooling.

Claims

1. The utility model provides a track traffic cover class forging extrusion moulding mould which characterized in that: the die comprises an upper die holder (1), a lower die holder (2), an extrusion die male die (3) and an extrusion die female die (4), wherein the extrusion die female die (4) is fixedly arranged on the upper bottom surface of the lower die holder (2), the extrusion die male die (3) is fixedly arranged on the lower bottom surface of the upper die holder (1), and the extrusion die male die (3) is matched with the extrusion die female die (4) for use; the upper die holder (1) and the lower die holder (2) are connected through a lifting mechanism (5), and the upper die holder (1) and the lower die holder (2) are arranged in parallel; the die is characterized in that a punching connecting skin positioning hole (8) is formed in the lower die base (2), the inclination angle of the extrusion head of the extrusion die male die (3) is 5-7 degrees, and the inclination angle of the extrusion head of the extrusion die male die (3) is increased according to the increase of the cavity of the extrusion die female die (4) or the increase of the height of a sleeve type forge piece.

2. The rail transit sleeve type forging extrusion forming die of claim 1, wherein: the extrusion die male die (3) is arranged on the lower bottom surface of the upper die base (1) through an upper die sleeve (6); and the extrusion die female die (4) is arranged on the upper bottom surface of the lower die seat (2) through a lower die sleeve (7).

3. The rail transit sleeve type forging extrusion forming die of claim 1, wherein: the number of the lifting mechanisms (5) is two, and the two lifting mechanisms are respectively arranged on two sides of an extrusion forming mechanism formed by the extrusion die male die (3) and the extrusion die female die (4).

4. The rail transit sleeve type forging extrusion forming die of claim 3, wherein: the lifting mechanism (5) comprises a guide post (51) and a guide sleeve (52), and the guide post (51) can extend and retract up and down in the guide sleeve (52).

5. The rail transit sleeve type forging extrusion forming die of any one of claims 1 to 4, wherein: and an extrusion hole on the extrusion die female die (4) is communicated with the lower die seat (2).

6. The rail transit sleeve type forging extrusion forming die of any one of claims 1 to 4, wherein: the diameter, the inclination angle and the height of an extrusion head of the extrusion die male die (3) can be modified according to the specification of a sleeve part to be formed, the diameter of the extrusion head is increased along with the increase of the diameter of a cavity of the extrusion die female die (4), the height of the extrusion head is increased along with the increase of the depth of the cavity of the extrusion die female die (4), and the inclination angle is properly adjusted to be increased along with the increase of the depth of the cavity of the extrusion die female die (4); the diameter and the height of the cavity of the extrusion die concave die (4) can be increased or decreased according to the increase or decrease of the specification of the sleeve type piece to be formed.

7. The rail transit sleeve type forging extrusion forming die of any one of claims 1 to 4, wherein: the maximum stroke of the lifting mechanism (5) is not less than 800 mm.

8. The rail transit sleeve type forging extrusion forming die of any one of claims 1 to 4, wherein: the suitable sleeve type forging piece has the mass of 20-90kg, the height of not less than 120mm, and the small and medium-sized long holes with the height-to-product inner diameter ratio of more than 1.